diff --git a/keyboards/massdrop/alt/alt.c b/keyboards/massdrop/alt/alt.c
index 81dd66b3c1..c3ed246a4f 100644
--- a/keyboards/massdrop/alt/alt.c
+++ b/keyboards/massdrop/alt/alt.c
@@ -18,4 +18,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /* Temporary solution for matrix delay */
 void matrix_output_select_delay(void) { matrix_io_delay(); }
-void matrix_output_unselect_delay(void) { }
+void matrix_output_unselect_delay(uint8_t line, bool key_pressed) {}
diff --git a/keyboards/massdrop/ctrl/ctrl.c b/keyboards/massdrop/ctrl/ctrl.c
index b50f1cb59f..c688d330a5 100644
--- a/keyboards/massdrop/ctrl/ctrl.c
+++ b/keyboards/massdrop/ctrl/ctrl.c
@@ -18,4 +18,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /* Temporary solution for matrix delay */
 void matrix_output_select_delay(void) { matrix_io_delay(); }
-void matrix_output_unselect_delay(void) { }
+void matrix_output_unselect_delay(uint8_t line, bool key_pressed) {}